高通 mm_qcamera_app test 学习
我们在高通8053的adb shell中使用
mm_camera_app的官方自带例程来测试摄像头的好坏。
/ # mm-qcamera-app
Please Select Execution Mode:
0: Menu Based 1: Regression
0
Starting Menu based!!
===========================================
Camera Sensor to be used:
===========================================
A. Primary Camera
Please enter your choice for sensor:
代码的路径在 QCamera2\stack\mm-camera-test
int main()
{
char tc_buf[3];
int mode = 0;
int rc = 0;
printf("Please Select Execution Mode:\n");
printf("0: Menu Based 1: Regression\n");
fgets(tc_buf, 3, stdin);
mode = tc_buf[0] - '0';
if(mode == 0) {
printf("\nStarting Menu based!!\n");
} else if(mode == 1) {
printf("Starting Regression testing!!\n");
if(!mm_app_start_regression_test(1)) {
printf("\nRegressiion test passed!!\n");
return 0;
} else {
printf("\nRegression test failed!!\n");
exit(-1);
}
} else {
printf("\nPlease Enter 0 or 1\n");
printf("\nExisting the App!!\n");
exit(-1);
}
rc = submain();
printf("Exiting application\n");
return rc;
}
main里边实现了选择了基础测试和回归测试。
主要的逻辑在sub_main 里边实现，。
该文件叫mm_camera_main_menu.c
包含的头文件
// Camera dependencies
#include "mm_qcamera_main_menu.h"
#include "mm_qcamera_app.h"
#include "mm_qcamera_dbg.h"
在main_menu.h里边包含了// Camera dependencies
#include "mm_camera_interface.h"
#include "mm_jpeg_interface.h"
可见是通过这里camera的interface接口的。在这个函数中解压hal层的so库，如下
my_cam_app->hal_lib.ptr = dlopen("libmmcamera_interface.so", RTLD_NOW);
my_cam_app->hal_lib.ptr_jpeg = dlopen("libmmjpeg_interface.so", RTLD_NOW);
if (!my_cam_app->hal_lib.ptr || !my_cam_app->hal_lib.ptr_jpeg) {
LOGE("Error opening HAL library %s\n", dlerror());
return -MM_CAMERA_E_GENERAL;
}
*(void **)&(my_cam_app->hal_lib.get_num_of_cameras) =
dlsym(my_cam_app->hal_lib.ptr, "get_num_of_cameras");
*(void **)&(my_cam_app->hal_lib.mm_camera_open) =
dlsym(my_cam_app->hal_lib.ptr, "camera_open");
*(void **)&(my_cam_app->hal_lib.jpeg_open) =
dlsym(my_cam_app->hal_lib.ptr_jpeg, "jpeg_open");
在安卓中我们的确找到了该so 库
/ # find . -name "libmmcamera_interface.so"
./usr/lib/libmmcamera_interface.so
/ # find . -name "libmmjpeg_interface.so"
find: ./sys/kernel/slab/L2TP/IPv6: No such file or directory
find: ./sys/kernel/slab/L2TP/IP: No such file or directory
./usr/lib/libmmjpeg_interface.so
